After Market Aluminium Radiator + Engine Coolant Temp Sensor Help

[Ecozile]

Replaced radiator with an after market aluminium radiator. Engine coolant temp sensor is now unplugged.

This is the sensor that is on bottom right corner of the radiator, Page EN233 (page 253)

I would like to know

* What does ECT actually does (apart from telling ECU what coolant temp is)

* What is the effect on not having one?

* If I must have ECT connected

Thanking you in advance

[mad082]

i'm not sure how much that sensor actually does. i'm pretty sure the ecu uses the 2 wire sensor in the top radiator hose for the engine temp levels.

as for what effect the temp sensor can have (this is in general, not specific to the sensor you are talking about), the ecu alters both the fuel settings and ignition settings when the engine is cold. when the engine is cold it adds in more fuel. i'm not sure whether it advances or retards the timing. this will result in more fuel being used when driving as well as possibly making the car harder to start when warm (may not be noticably different though).

[Moodles2]

I think the bottom one is used to switch on the AC fan automatically once the temp reaches 90-95+, while the top one reports the engine temp to the ECU

[Ecozile]

Can anyone confirm if bottom sensor is for AC fan only? if so i am not going to bother with it.

Otherwise I will have to drill shiny ali radiator to plugs one of these sensors...

Thanks to both of you for replying

[mad082]

i am pretty sure that what moodles said is correct. it's only for the fan.

[mystery_kid]

the ecu temp sensor is definitely in the top pipe

[BH_SLO32]

Can anyone confirm if bottom sensor is for AC fan only? if so i am not going to bother with it.

Otherwise I will have to drill shiny ali radiator to plugs one of these sensors...

Thanks to both of you for replying

Yes, only for the fan operation

[Ecozile]

Great, thanks.

That problem is solved then, not going to connect it

Cheers